Razor-stropping machine.



M. H. AVRAM. RAZOR STROPPING MACHINE. AYPLIOATION IILBD JUNE 2.1, 1909.

Patented Mani, 1910.

A To all when it may concern:

. cation filed by me on March 25th,.!l 09, under, Serial No.

UNITED' STAT-Es' PATENT onirica.

Mois H. AVBAM, 0F NEW Yonx, N. Y.

nazonfsraorrmo unanimi.

Specification ot Letters Patent. Patented Mar. 1, 1910. Application led June 2 1, 1909*. Serial No. 503,491..

shouldered jaws 23 24, betweeiiwlii'ch the razor blade 25 to be stro ped ma @be inse'rted. The upper ends o plates 2 4 21 are spread by a spring 26 int/erposed`between said ends, whereby jaws 23 24 are forced to- 'ward one another. A ti h tapped into plate ,21 and a ains't late 20 serves to b ade 25 etween jaws 23, 24, if so desi-red.

Be it known that I, Mois H. AvaAM, a citi z en of the United States, residin vat New York city, Manhattan, county of ew York, State of New York, have invented new and useful Improvements in Razor-Stropping Machines, of which the -following is a-specification. 'This invention relatesto an improved machine ;for stropping the blades of safety razors and similar articles in a simple and eii'ective manner. The machine is 'so constructed that the blades to be shar ened may be'readily introduced and brougiit into proper o erative enga ement with the stro ping ro 1ers.

n the accompanying rawing: Figure 1 is a front view'of my improved razor strop ping machine; Fig. 2 a lan thereof, with thel blade holder loinitte Fig. 3 a rear view, partl 'broken away, of the sti-opping machine; ig. 4 a vertical section, partly broken `awa"y, on line'4-4, Fig. 2, showing the blade holder in position; Fig. 5 a section on line 5 5, Fig. l' Fig. 6 an end view of the blade holder; ig. 7 a cross section through the slotted rock shaft on line' 7-7, 2 and Fig. 8 a cross section on line .8-8,

structed that blades of the various makes of the safety razors now in the be readily grasped thereby. For holding a .blade of the so-called Gillette safety plate 21; are

e 4blade being jaws lby tighten- Fi 5. j

ily improved strapping machine consists essentially oa air of 'parallel sharpening or stroppingrrollers 10 and 11 journaled in a frame which comprises referably a pair of L-sha ed sections 12 and 13, connected at 14 to a handle 15. Rollers l0 aiidll areV slightlyspacedfrom one another to for'n an intervening gap 16, as illustrated in Figs. 1 and 2. The stropping rollers maybe of any suitable construction, such for instance, as shown and described in a co-pendingappliof a rock shaft 32 journale in arms 33, 3,4 which extend upwardl from frame sections 12, 13 respectively. n order .to insure a proper engagement of the holder with the rock shaft, and to revent any dis lacement of the former witliin the latter urin'g'the stropping operation `a catch is provided .which consists of'a fiat spring 55 secured to Vshaft 32. This spring carries a pair of bevcorresponding apertures of shaft 32. Plate 21 of th 'blade holder is provided with a 485,620. Thev threaded hub 17 of one of the rollers, say roller 10, projects slightly beyond the front frame section 13 to beengaged by'a suitable handle 18. To the stro ping rollers are secured gear wheels/19 which'mesh into one another, so that by turning handle 18 the stropping .rollers will be simultaneously rotated in opposite directions.

` The blade holder. comprises essentially a pair of clamping plates'20, 21 pivoted to one another as at 22. At their lower ends, plates 20, 21 are bent inwardly to form a pair of tions 35l which are engaged'by pins v56 when the holder assumes its. in slot'31. To enable t e operator to readily with a transverse rib 36 which is adapted to beseated upon the upper'horizontal edge 37 of shaft 32. As will be seen from Fig. 4, `the blade holder is of such a length as to snu ly fit into slot 3l so that, after rib 36 has een brought into contact with edge 37, pins 56 will automatically enter openings 35 of the blade holder. If it is desired to retening screw 2'(- adapted to bear:V securely clamp- Blade holder 20, 2 1' is preferably sov con-` show'n in 6. Tllupon the shoul eled pins 56 vprojecting into slot 31 through pair of correspondingly arranged perfora.-

.ascertain this position, plate 21 is provided market 'may' razor, a flat s ring 28 is riveted plate ing p rovided with a .pair

ic ,by fpassingthrougb o1der,20, 21 is ada ,ted to be received within a corresponding onitudinalslot 31 roper position with- .l

move the latter, spring 55 lis bent away from shaft 32 by grasping the tingerieee 38 formed on the sprln whereupon t e blade holder may be readily removed. The means for rocking shaft 32 so ast bring the blade to be sharpened into alternate engagement with rollers and 11 are as follows: To each gear wheel. 19 is secured a cam disk 39. Between cams 39 is interio posed a roller 40 pivoted to the lower end of a resilient cam lever or arm 41 the upper end of which is firmly secured to a pin 42 forming part of shaft 32. Pin 42 is journaled in a bearing 43 on arm 33, said bearing beinff recessed as at 44 for the accommodation o? the upper end of arm 41, as illustrated .in Fig. 4. Into the front end ofshaft 32 is tappedan axially perforated screw 45, the cylindrical Ysection 46 `of which engages l a corresponding bore of arm 34. Cams 39 are s'o shaped as to impart to roller 4() an oscillating movement which in -t`urn causes a correspondinfr oscillation of rock shaft 32 and blade holdel` 20, 2l. In this way the razor blade carried by said holder will be brought into alternate engagement with the stropping rollers. As arm 41 is made in the form of a spring to which a comparatively large stroke is im artcd by cams 39, the blade carried by ho der 20, 21 will be forced against the rollers with sufficient pressure to insure a proper operative engagement between blade and rollers.

Means should be provided which permit the insertion of a plate intothe machine only when slot 31 of shaft 32 assumes its central position, so as to prevent any accidental injury to the covering of the stropping rollers when inserting a blade into the machine. These means. are shown to consist ot a pin 47 engaging the axial perforation of screw 45, wh1ch pin when projected into slot 31 prevents the introductionof the blade holder. Pin 47 is pivoted at 48 to the arm 49 of a lever fulcrumed at .50 to frame section 13. The other arm 51 of this lever is influenced by a spring 52 and adapted to be engaged by handle 18 of rollerlO. Handle 18 should' be so set with relation to cams 39, that when the former engages lever arm 51, cam lever 41 is in its neutral or central position. At its inner side, handle -18 is preferably rounded as at 53, so as to cause a gradual depression of lever arm 51 55 when engagin the same.4 The parts are so dimensioned tiat when handle 18 assumes the position shown in Figs. 2 and 5, pin 47 is withdrawn'from slot 31, thereby permitting an unobstructed introductlon of blade holder 20, 21. When, however, handle 18 is out of engagement with arm 51,l

spring 52 tilts lever 49, 51 so as to project pin 47 into slot 31 and thereby preventthe insertion of the blade holder.

The operation of the device will be readily' becomes seated upon the edge of shaft 32.V

lu-this position, pms 56 will engage perforar tions 35 of the blade holder so as to hold the latter securely to shaft 32. Handle 18 is then rotated to cause a correspondin rotation of stropping rollers 1Q and 11, an a simultaneous oscillation of the blade -holder `and blade carried thereby. IIn-this way the blade is alternately swung from one strop ingV roller toward the other roller, so`

that oth sides of its cutting edge are automatically .and uniformly sharpened.- In4 ordcrjtol prevent any reverse rotation of the stropping rollers against the cutting edge of thcblade to be sharpened, aspring in-- fluenced pawl 54 is pivoted to frame 12, said pawl engaging the teeth of one'of the gear wheels 19. Thus the rollers .may be freely'rotated in one direction, while their rotation in the opposite direction and any accidental-in'ury to the covering of the stroppiug rol ers is effectively prevented.

I claim:

simultaneously rotatinrr said' rollers in opposite directions, a shaft Tiavng a longitudinal slot, means actuated by said rollers for oscil-` lating. the shaft, Aa blade holder adapted to be received within the shaft-slot, and a catch secured to said shaft and adaptedto engage the blade holder.

2. A razor stropping machine comprising a pair 4of stropping rollers, means for simultaneously rotatin said rollers in o posite directions, a shaft having a lohgitu inal slot, means actuated by said rollers for oseillating the shaft, a blade holder adapted to "engage the slot and having a transverse e5 1. rt razor stropping machine comprising va pair of stroppmg rollers, means for the pin, and a blade holder removably engagin the slot. a

4r razor stropping machine com rising a pair of intergeared stro pin ro 1ers, a handle secured to one of said rol ers, a shaft havin a longitudinal slot, means actuated by said handle for oscillating the shaft, a

spring-influenced pin adapted to be pro-' j'ected into said slot, means actuated by the handle for withdrawing the pin from the to the pin, slot, and nv blade holder removably engagthe lever. ing said Slot.

5. In a razor stropping machine, a rock and a handle adapted to engage MOS H. AVRAM.

shaft having a longitudinal slot, a pin Witnesses: adapted to, be projected'into said slot, a ARTHUR E. ZUMPE, spring-influenced lever pwotally connected VJR. SCHULZ. 

